When to Use NEW AND USED BBU？

I have a question and hope I can get it answered.  Verizon support sure can't seem to give me a straight one.... 

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I have the BBU in my garage.  It was there when I moved into this home ~8 yrs ago.  I had FIOS service installed this past week. (For some reason, Verizon support can not understand that the BBU was already there and I never had Verizon service until this past week.)

I did not notice when the installer was here, but the red light on the BBU is on indicating the battery needs to be replaced.  He never explained a thing about the BBU to me.  After sever lengthy chats and calls to support, I believe a new battery is finally on it's way.  Reading through this thread I now wonder if I even need the BBU.  I do NOT have a land line -- only cellular service.  My plan consists solely of TV  and Internet service.  If I unplug the BBU will this affect my service?  At one time I thought it only was for , but now I'm not sure.  

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Any help will be greatly appreciated.  I'm really curious to know  if / when I do replace the battery, will my TV boxes and router simply reboot and go back to operating or do I need to do something else to get operational assuming the BBU also affects TV and Internet.  Sorry for these convoluted questions....lol   TIA for help and advice...... 

The original Macintosh was designed around a single ASIC called the IBM or 'Integrated Burrell Machine'. It was supposed to simplify the logic and the board layout - however, this never materialised as hoped and so the team fell back on tried and tested PAL chips instead.

However the idea was never really fully dropped, and years later, Robert Leroy "Bob" Bailey created the single chip ASIC that Apple had wanted all along - calling it, the Bob Bailey Unit. It was a consolidation of the BMU's, ASG, TSM, TSG, LAG, but with a few extra's thrown in.

The video PAL's in the Plus and earlier compact Macs spend 50 percent of the RAM access time available during display of a horizontal line, leaving the other 50 percent of that time for doing everything else. The earlier Macs spend all of the time for normal computation during the vertical and horizontal retrace intervals, when the screen is not drawing anything.

However, because the BBU can transfer twice as much data at a time into the video circuitry, the Macintosh SE spends only one quarter of the RAM access time dedicated to the video display. This provides a significant performance boost over the Plus & prior compacts for running applications in RAM.

Real world tests show that this arrangement gives the SE a 10 to 20 percent performance boost over the Plus.

Did you know as well that the Macintosh Classic is essentially a cost-reduced SE? It even uses the same BBU chip there, too - so the BBU was produced from all the way to . They're identical, pinout wise, even if the part numbers are obfuscated. If you have a totally dead classic, you can save the BBU and use that to build yourself a Macintosh SE Reloaded

Due to the work of

https://siliconpr0n.org/map/apple/344s-b/mz_am10x/

He's also taken the BrainStorm BBU formerly belonging to

https://chips.c128.se/brainstorm/

Thanks to the imaging - if you notice in the bottom left hand corner of the die, there's a little more information. Even though the chip was diffused by IMP, in this instance, the internals are actually by VTi (later known as just VLSI), but more specifically, the VGC series of off-the-shelf ASIC's.

OK, so that's cool, but why is that important?

Well, just so happens we also have the VGC Series Gate Array Design Manual, here:


Using this, we can disassemble the structure of the gate, possibly using something like

What differentiates the Macintosh SE from the rest of it's forebears? Well, the fact that the PAL's of the earlier 128K, 512K & Plus machines have gone away and been replaced by a single custom ASIC.The original Macintosh was designed around a single ASIC called the IBM or 'Integrated Burrell Machine'. It was supposed to simplify the logic and the board layout - however, this never materialised as hoped and so the team fell back on tried and tested PAL chips instead.However the idea was never really fully dropped, and years later, Robert Leroy "Bob" Bailey created the single chip ASIC that Apple had wanted all along - calling it, the Bob Bailey Unit. It was a consolidation of the BMU's, ASG, TSM, TSG, LAG, but with a few extra's thrown in.The video PAL's in the Plus and earlier compact Macs spend 50 percent of the RAM access time available during display of a horizontal line, leaving the other 50 percent of that time for doing everything else. The earlier Macs spend all of the time for normal computation during the vertical and horizontal retrace intervals, when the screen is not drawing anything.However, because the BBU can transfer twice as much data at a time into the video circuitry, the Macintosh SE spends only one quarter of the RAM access time dedicated to the video display. This provides a significant performance boost over the Plus & prior compacts for running applications in RAM.Real world tests show that this arrangement gives the SE a 10 to 20 percent performance boost over the Plus.Did you know as well that the Macintosh Classic is essentially a cost-reduced SE? It even uses the same BBU chip there, too - so the BBU was produced from all the way to . They're identical, pinout wise, even if the part numbers are obfuscated. If you have a totally dead classic, you can save the BBU and use that to build yourself a Macintosh SE ReloadedDue to the work of @jgrip and his metallurgical microscope, a BBU was sacrified to THE GREATER GOOD and imaged. If you click on this link, you can look at the die, zoom in, scan around and see the detail of the logic gates themselves:He's also taken the BrainStorm BBU formerly belonging to @ScutBoy and imaged that, too!Thanks to the imaging - if you notice in the bottom left hand corner of the die, there's a little more information. Even though the chip was diffused by IMP, in this instance, the internals are actually by VTi (later known as just VLSI), but more specifically, the VGC series of off-the-shelf ASIC's.OK, so that's cool, but why is that important?Well, just so happens we also have the VGC Series Gate Array Design Manual, here:Using this, we can disassemble the structure of the gate, possibly using something like https://www.degate.org/ - any takers?

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